new baby, feel like me and SO are so disconnected

I just need to vent. My SO works on the road(truck driver) so I only see him on the weekends. He has his daughter every other weekend as well, his daughter is a very needy child. Needs to have everyone in the house give her all there attention so weekends he has her I don't get time with my SO and neither does our daughter because if he attempts to give our daughter(3months) attention his daughter(8) makes sure she gets it back. So I very much look forward to my quality time weekends with my SO when she's not here. Well this weekend that he doesn't have her he went camping(which he very much deserves!) ....So I didn't have time with him last weekend , our weekend together hes gone, next weekend he has his daughter again, and than the following we have a family thing so he will be getting her again. So in the end it will be a month and a half before I get quality time with my SO && im so depressed about it.